• • • Related only to Zabbix 2.0 API ***

(1) Correct 2.0 method syntax doesn't work:

Request:
{"jsonrpc":"2.0","method":"usermacro.updateglobal","params":[

{"globalmacroid":"8","value":"192"}

],"id":0,"auth":"c6f72a1a2ee604002b6bd72b8586335a"}
Response:
{
"jsonrpc":"2.0",
"error":

{ "code":-32602, "message":"Invalid params.", "data":"Wrong macro \"\"." }

,
"id":0
}

(2) Starting from Zabbix 2.0 the method "usermacro.updateglobal" is supporting ID(s) as a parameter.
http://www.zabbix.com/documentation/2.0/manual/appendix/api/usermacro/updateglobal

Zabbix 1.8 supported only macro name(s) as a parameter.
http://www.zabbix.com/documentation/1.8/api/usermacro/updateglobal

If an user will use old 1.8 method with 2.0 GUI then error "Macro \"{$MACRO1}\" already exists." will be enough incorrect and can confuse.
This error message should be changed to something: "Array of macro IDs missing" or so.

An example using trunk r25374 API:
Request:
{"jsonrpc":"2.0","method":"usermacro.updateglobal","params":{"macro":"{$MACRO1}","value":"192.168.0.1"},"id":0,"auth":"c6f72a1a2ee604002b6bd72b8586335a"}
Response:
{
"jsonrpc":"2.0",
"error":{
"code":-32602,
"message":"Invalid params.",
"data":"Macro \"{$MACRO1}\" already exists."
},
"id":0
}